Dynamic microphone `` MD-80M ''.Microphones.MicrophonesThe dynamic microphone "MD-80M" was produced presumably since 1978 by the Tula plant "Oktava". The microphone is designed to amplify speech in halls with an unfavorable acoustic situation as part of the speaker's console. The operating frequency range is 100 ... 15000 Hz. Free field sensitivity at 1000 Hz, 1.3 mV / Pa. Modulus of electrical impedance 200 Ohm. Overall dimensions 151x44 mm. Weight 110 gr.